Path: utzoo!utgpu!news-server.csri.toronto.edu!cs.utexas.edu!swrinde!elroy.jpl.nasa.gov!decwrl!sgi!shinobu!odin!anchor!olson
From: olson@anchor.esd.sgi.com (Dave Olson)
Newsgroups: comp.sys.sgi
Subject: Re: Media/Write errors.....
Message-ID: <1991Feb16.033854.21452@odin.corp.sgi.com>
Date: 16 Feb 91 03:38:54 GMT
References: <9102151454.AA01241@solomon.squibb.com>
Sender: news@odin.corp.sgi.com (Net News)
Organization: Silicon Graphics, Inc.  Mountain View, CA
Lines: 45

In <9102151454.AA01241@solomon.squibb.com> zilaitis@SOLOMON.SQUIBB.COM writes:

| Hi,
| 
| I placed a call to sgi but since they are not under any
| obligation to reply within (what I would calculate as) a 
| reasonable amount of time maybe someone out there can tell me
| if I should be worried:
| 
| extracted from SYSLOG
| 
| Feb 13 16:26:22 solomon unix: dks0d1s0 (/): Media error: No addr 
| mark found in ID field. Block #94472 (129248)
| Feb 13 16:26:22 solomon unix: dks0d1s1: Swap out failed 
| blkno 0x17108 (page still in memory)
| 
| Feb 14 10:46:23 solomon unix: dks0d1s0 (/): Media error: No addr mark 
| found in ID field. Block #3735 (5805)
| Feb 14 10:46:23 solomon unix: dks0d1s0 (/): Write error. 
| Filesystem on device is corrupted: unmount and check it.
| 
| 
| I ran standalone,  fx (read-only)
| excersize,sequential  did not find any errors
| 
| have not had any more errors.... (fingers crossed?)

Yes.  Both of these errors were on writes, so they might not
be found by a readonly exercise.  From the error message,
it looks like you are running 3.2 (it reports the partition #
incorrectly, but the block #'s are correct; the first block
# is partition relative, the second is relative to block 0 on
the drive).

For the swap area, run a wr-cmp exercise pass, since there is
nothing to lose.  For the block in the root partition, you
could try running multiple rd-cmp passes to see if it finds
the problem, but you may be stuck with backing up your whole
system, and running a wr-cmp pass, if the problem can't be
found with reads, and keeps occuring.
--

	Dave Olson

Life would be so much easier if we could just look at the source code.